Smart Power management system in any management system


         Smart Power management system in any management system




Protocols:   UART, RTC, LCD

Brief:   We are doing this project to controlling lighting, fans etc by using mobile Bluetooth pairing to arm device HC-05 Bluetooth here working automatic particular time it will check the status of lights etc then that will send to mobile phone will you feel turn off or on that operation will be done by requested small commands from mobile.

Hardware Used: lpc2129 development board (ARM7), Bluetooth module HC-05, relay, Ac bulb.

Software Used: Keil µVision 4, Flash Magic


code for the above project

//same as 1st prg but simplyfing code we are using funtions                
#include<lpc21xx.h>
#include<string.h>
 void uart_tx_string(char *str);

  
void delay(int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<3000;j++)
{
}
}
}
 void init_rtc()
{
 CCR=(1<<0);   // enable
 PREINT=456;   // crystel oscillator giving 15Mhz, but rtc will work at 32.768khz  to scle this we are using formula and geting this number 
 PREFRAC=25024;
 HOUR=12;
 ALHOUR=12;
 ALMIN=12;
 MIN=11;
 SEC=0;
}

void uart_int(void)
{
 PINSEL0 |= (1<<0)|(1<<2);    // configuring the UART funtion
 PINSEL0 &= ~((1<<1)|(1<<3));
 U0LCR = (1<<0)|(1<<1)|(1<<7);  // configuring line control register(LCR),DLATCH
 U0DLM = 0;        // Loding value DLM and DLL
 U0DLL = 97;
 U0LCR = (1<<0)|(1<<1);     // disable the DLATCH register
}

char uart_rx (void)
 {
   while(!(U0LSR & (1<<0)));
   return (U0RBR);
 }
void uart_tx(char c)
 {
  while(!(U0LSR & (1<<5)));
  U0THR = c;
 }
 void uart_tx_string(char *str)
  {
  while(*str)
  {
  uart_tx(*str);
  str++;
  }
  }
int main()
{
  int i,b=0;
  char *password = "check";
  char recvpass[5]={0};
     uart_int();
 IODIR1=(1<<25);
 IODIR1=(0xff<<17);
 init_rtc();      
 g:
      while((ALHOUR==HOUR)&&(MIN==ALMIN))
   {    
        if((1<<18)&&IOPIN1)
     {
      uart_tx_string("new loop\n");
     }
     }
       
      uart_tx_string("input running\n");
     if(IOPIN1&(1<<25))
     {
   IOSET1=(1<<17);
     uart_tx_string("on \n");
    }
    else
    {
     IOCLR1=(1<<17);
     uart_tx_string("off \n");
     }
   
 for(i=0;i<5;i++)
  {
     recvpass[i]=uart_rx();
     uart_tx(recvpass[i]);
  
  }
      
 if(strncmp(password,recvpass,5)==0)
 {
 uart_tx_string("please wait satus checking\n");
 if(IOPIN1&(1<<17))
 uart_tx_string("frist light on\n");
 }
 else
 {
 uart_tx_string("string not match\n");
 }
 if((ALHOUR==HOUR)&&(MIN==ALMIN)&&(IOPIN1&(1<<17)))
  {
  
  IOSET1=(1<<18);
  }
  else
 {
 IOCLR1=(1<<18);
   
 }
 
 goto g;
     }
 

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